[sdiy] 1-quadrant multiplier with 2164

mark verbos markverbos at gmail.com
Fri Jan 21 12:38:05 CET 2022


ok, digital garbage.

The result of noise jittering the frequency control, FM,  quantization noise and maybe pretty poor design.

Mark





> On Jan 21, 2022, at 11:15 AM, Mike Bryant <mbryant at futurehorizons.com> wrote:
> 
> Ø  A digital VCO can have a very clean sine wave, but when it is multiplied or FM’ed it aliases and shows its weaknesses. 
>  
> Would have to be a pretty poor design to create aliases.   Every r.f. transmitter and receiver in the world does it this way nowadays.  Are you sure you don’t mean sidebands, which are created no matter how the sinewave is created ?

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